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January 8, 20267 min readCreate a Financial

Create a Financial Services App UI with Replay AI

R
Replay Team
Developer Advocates

TL;DR: Replay AI enables rapid prototyping of financial services UI by reconstructing working code directly from video demonstrations, significantly accelerating development and ensuring user-centric design.

From Video to Fintech: Building a Financial Services App UI with Replay#

The traditional approach to UI development in financial services is often slow and iterative, involving extensive design mockups, prototyping, and manual coding. This process can be especially challenging when aiming to replicate specific user flows or incorporate nuanced interaction patterns observed in existing applications. What if you could simply show the system what you want and have it generate working code?

That's the power of Replay, a revolutionary video-to-code engine. Replay analyzes video recordings of desired UI behavior and uses its built-in Gemini-powered engine to reconstruct functional, customizable code. This approach, called Behavior-Driven Reconstruction, allows developers to rapidly prototype and iterate on UI designs, focusing on user experience from the outset.

The Problem: Slow UI Prototyping in Fintech#

Fintech applications demand a high level of usability and trustworthiness. Users need to intuitively understand how to manage their finances, make transactions, and access critical information. Achieving this requires careful consideration of user flows, interface elements, and overall design. However, traditional UI prototyping methods often fall short:

  • Static mockups don't capture dynamic behavior: They can't demonstrate complex interactions or real-time data updates.
  • Manual coding is time-consuming: Building even a basic prototype can take days or weeks, delaying feedback and iteration.
  • Communication gaps between designers and developers: Misinterpretations of design specifications can lead to costly rework.

The Solution: Behavior-Driven Reconstruction with Replay#

Replay addresses these challenges by using video as the source of truth for UI design. Instead of relying on static mockups or written specifications, you can simply record a video of yourself interacting with a similar application or demonstrating the desired behavior. Replay then analyzes the video and generates working code that replicates the observed UI and interactions.

FeatureScreenshot-to-CodeTraditional PrototypingReplay
InputScreenshotsDesign Tools, Manual CodeVideo
Behavior AnalysisLimitedNone
Working Code GenerationBasicManualAdvanced
Multi-Page SupportLimitedManual
Supabase IntegrationOften MissingManual
SpeedFast (static)SlowVery Fast (dynamic)

Building a Financial Services App UI: A Step-by-Step Guide#

Let's walk through the process of creating a basic financial services app UI using Replay. We'll focus on building a simple dashboard that displays account balances and transaction history.

Step 1: Record a Demo Video#

First, record a video demonstrating the desired UI behavior. This could involve:

  1. Navigating between different sections of the dashboard.
  2. Viewing account balances and transaction details.
  3. Filtering transactions by date or category.
  4. Simulating user interactions like clicking buttons or entering data.

The more detailed the video, the better Replay will be able to understand your intentions and generate accurate code.

💡 Pro Tip: Speak clearly while recording, explaining what you are doing and why. This provides valuable context for Replay's AI engine.

Step 2: Upload the Video to Replay#

Upload the recorded video to the Replay platform. Replay will automatically analyze the video and begin reconstructing the UI.

Step 3: Review and Customize the Generated Code#

Once the reconstruction is complete, Replay will present you with the generated code. You can review the code, make adjustments, and customize the UI to your specific requirements.

Replay supports various front-end frameworks, including React, Vue.js, and Angular. You can choose the framework that best suits your project.

Step 4: Integrate with Supabase (Optional)#

For dynamic data, you can integrate Replay with Supabase, a popular open-source Firebase alternative. Replay can automatically generate the necessary code to fetch and display data from your Supabase database.

📝 Note: Replay's Supabase integration drastically reduces the boilerplate code needed for data fetching and management.

Here's an example of how Replay might generate code for fetching account balances from Supabase:

typescript
// Generated by Replay import { createClient } from '@supabase/supabase-js'; const supabaseUrl = 'YOUR_SUPABASE_URL'; const supabaseKey = 'YOUR_SUPABASE_ANON_KEY'; const supabase = createClient(supabaseUrl, supabaseKey); const fetchAccountBalances = async () => { const { data, error } = await supabase .from('accounts') .select('account_id, balance'); if (error) { console.error('Error fetching account balances:', error); return []; } return data; }; export default fetchAccountBalances;

This code snippet demonstrates how Replay can automatically generate the necessary Supabase client and data fetching logic. You can then use this function to display the account balances in your UI.

Step 5: Style Injection#

Replay also allows you to inject custom styles into the generated UI. You can use CSS, Sass, or any other styling language to fine-tune the appearance of your application.

⚠️ Warning: While Replay generates functional code, you may need to adjust the styling to match your brand guidelines and design preferences.

Here's an example of injecting custom CSS styles:

css
/* Custom styles for the account balance display */ .account-balance { font-size: 20px; font-weight: bold; color: #333; margin-bottom: 10px; } .account-id { font-size: 14px; color: #777; }

You can then apply these styles to the generated UI elements to customize their appearance.

Key Benefits of Using Replay for Fintech UI Development#

  • Rapid Prototyping: Quickly create functional prototypes from video demonstrations.
  • User-Centric Design: Focus on user experience by replicating real-world interaction patterns.
  • Reduced Development Time: Automate code generation and eliminate manual coding tasks.
  • Improved Communication: Bridge the gap between designers and developers with a shared understanding of UI behavior.
  • Enhanced Collaboration: Enable designers, developers, and stakeholders to collaborate more effectively on UI design.
  • Faster Iteration: Easily iterate on UI designs based on user feedback and testing.
  • Multi-Page Application Generation: Replay can handle complex, multi-page application flows, not just single-screen mockups.
  • Product Flow Mapping: Understand the user journey and optimize the application's flow based on video analysis.

Replay is more than just a screenshot-to-code tool. It's a behavior-driven reconstruction engine that understands the intent behind user actions, allowing it to generate more accurate and functional code. This is particularly valuable in fintech, where complex user flows and data interactions are common.

Frequently Asked Questions#

Is Replay free to use?#

Replay offers a free tier with limited functionality. Paid plans are available for more advanced features and higher usage limits.

How is Replay different from v0.dev?#

While both tools aim to generate code, Replay uses video as its primary input, enabling behavior-driven reconstruction. v0.dev typically relies on text prompts and pre-defined templates. Replay understands the dynamic aspects of a UI based on observed behavior, leading to more accurate and functional code generation.

What front-end frameworks does Replay support?#

Replay currently supports React, Vue.js, and Angular. Support for other frameworks is planned for future releases.

Can Replay handle complex UI interactions?#

Yes, Replay is designed to handle complex UI interactions, including animations, transitions, and data updates. The more detailed the video, the better Replay will be able to understand and replicate the desired behavior.

How secure is Replay?#

Replay employs industry-standard security measures to protect user data and ensure the confidentiality of video recordings.


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